John 1:6-8, 15

God sent a man, John the Baptist, to tell about the light so that everyone might believe because of his testimony. John himself was not the light; he was simply a witness to tell about the light.

John testified about him when he shouted to the crowds, “This is the one I was talking about when I said, ‘Someone is coming after me who is far greater than I am, for he existed long before me.’”